Well thats really great! I had a surprise similar to that. I had alot of offers and surveys that i had completed and didnt credit. Went to bed and when I woke up all the ones that I had done for about two days had credited. It was like Christmas morning lol

From time to time you do get some special bonus by using the toolbar. Sometime I get notification at the bottom of my screen and I click on it and get the credit. Make sure you have your settings set up right.